ICA of Complex Valued Signals: A Fast and Robust Deflationary Algorithm
IJCNN '00 Proceedings of the IEEE-INNS-ENNS International Joint Conference on Neural Networks (IJCNN'00)-Volume 3 - Volume 3
IPC '07 Proceedings of the The 2007 International Conference on Intelligent Pervasive Computing
Blind separation of speech mixtures via time-frequency masking
IEEE Transactions on Signal Processing
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In this paper, we propose a speech recognition system with a narrow sound channel for intelligent service robots in noisy environments. The narrow sound channel is obtained by using time delay between two array microphone inputs used in the Degenerate Unmixing Estimation Technique (DUET). In the proposed system, the voice from a specific direction only passes through the sound channel, while unwanted voices from any other direction are removed. The recognition results showed that the performance of the proposed system, using a stereo microphone is higher than the normal voice recognizer, using a single ultra directional microphone, without this method.